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Old 11-16-2012, 09:25 PM   #1
Alexotronic
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Checking fuel pressure with tire pressure gauge?

Hello, is it possible to check my fuel pressure with a basic PSI gauge? Or would that just give me a reading while spraying gas all in my engine bay?
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Old 11-16-2012, 10:01 PM   #2
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Haha
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Old 11-16-2012, 10:15 PM   #3
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I mean....give it a try?
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Old 11-16-2012, 10:32 PM   #4
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pretty sure autozone rents a fuel pressure tester for free????
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Old 11-16-2012, 10:38 PM   #5
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I understand it will work, use some towels to make sure you do not get too much spray.

Suggest you try initially without the engine running so you can get an idea how messy/dangerous it may get.

Proper fuel pressure gauge is the best approach in the end anyway.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

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Old 11-16-2012, 11:11 PM   #6
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How/Did it work? Just curious.
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Old 11-16-2012, 11:25 PM   #7
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Hrm. Even doing it with the engine off might be sketchy (fuel lines stay pressurized all the time I think).

I'm not COMPLETELY broke.. so no reason not to do it right.

Going to try and rule out other things for my rough idle first though. (Re-inspect DISA, elbows, ICV)
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Old 11-17-2012, 06:08 AM   #8
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Fuel pump/pressure rarely causes rough idle, it causes other problems, but usually not at idle.

Suggest you read the first link below in my signature.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 11-17-2012, 11:52 AM   #9
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Quote:
Originally Posted by Alexotronic View Post
Hello, is it possible to check my fuel pressure with a basic PSI gauge? Or would that just give me a reading while spraying gas all in my engine bay?
Give it a go and let us know what happens. Make sure you video it. We have a TV show in the UK called You Been Framed. They'll give you 250 for it.

Last edited by RayPooley; 11-17-2012 at 11:53 AM.
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